Return land mandated by the gear failing to retract on takeoff. Gear down lock pins were not removed...

Attributes
ACN	317505
Time
Date	199510
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 200
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : lax tower : lax
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	climbout : takeoff ground : preflight other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 9000 flight time type : 2300
ASRS Report	317505
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 4700 flight time type : 1100
ASRS Report	317524
Events
Anomaly	aircraft equipment problem : less severe non adherence other other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During nighttime preflight on ramp in lax, crew failed to remove maintenance main gear locks. There were no flags on either lock, and captain and first officer failed to notice them. First officer removed nosewheel lock, but, because of poor lighting did not remove main locks. Aircraft was parked in a dark corner of the ramp. We departed runway 24L at lax, and when gear failed to retract, returned to an uneventful landing in lax. A more vigilant preflight and better lighting conditions with flags on locks would go a long way.

Original NASA ASRS Text

Title: RETURN LAND MANDATED BY THE GEAR FAILING TO RETRACT ON TKOF. GEAR DOWN LOCK PINS WERE NOT REMOVED.

Narrative: DURING NIGHTTIME PREFLT ON RAMP IN LAX, CREW FAILED TO REMOVE MAINT MAIN GEAR LOCKS. THERE WERE NO FLAGS ON EITHER LOCK, AND CAPT AND FO FAILED TO NOTICE THEM. FO REMOVED NOSEWHEEL LOCK, BUT, BECAUSE OF POOR LIGHTING DID NOT REMOVE MAIN LOCKS. ACFT WAS PARKED IN A DARK CORNER OF THE RAMP. WE DEPARTED RWY 24L AT LAX, AND WHEN GEAR FAILED TO RETRACT, RETURNED TO AN UNEVENTFUL LNDG IN LAX. A MORE VIGILANT PREFLT AND BETTER LIGHTING CONDITIONS WITH FLAGS ON LOCKS WOULD GO A LONG WAY.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.